Storing tap water in your basement for emergencies sounds simple, but untreated water can spoil in weeks. Learn how Katadyn Micropur uses the power of silver ions to keep water fresh for months.

We all know the rule of three: humans can survive three weeks without food, but only three days without water. Whether you are prepping for a severe storm, a potential power grid failure, or outfitting a remote cabin, storing emergency water is a fundamental part of preparedness.

However, many people make a critical mistake: they fill plastic canisters with tap water and leave them in the basement, assuming the water will stay fresh indefinitely. The reality is that tap water is not sterile. Over time, microorganisms will multiply, and the water will grow stale, develop algae, and become unsafe to drink.

The Solution: The Power of Silver Ions Since the days of the Roman Empire, humans have known that silver has unique purifying properties (Romans used to drop silver coins into water barrels to keep them fresh). Today, Katadyn has perfected this chemistry with Micropur.

Micropur relies on positively charged silver ions. When added to water, these microscopic ions seek out bacteria. The positively charged ions attach themselves to the negatively charged cell walls of the microorganisms. Once attached, the silver ions disrupt the cell's enzymes and DNA, completely stopping their ability to metabolize and divide.